ASTM_D_8071_-_21.pdf

Designation:D807121Standard Test Method forDetermination of Hydrocarbon Group Types and SelectHydrocarbon and Oxygenate Compounds in AutomotiveSpark-Ignition Engine Fuel Using Gas Chromatography withVacuum Ultraviolet Absorption Spectroscopy Detection(GC-VUV)1This standard is issued under the fixed designation D8071;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope*1.1 This test method is a standard procedure for the deter-mination in percent mass or percent volume of hydrocarbongroup types(paraffins,isoparaffins,olefins,naphthenes,aromatics),methanol,ethanol,benzene,toluene,ethylbenzene,xylenes,naphthalene,and methylnaphthalenes in automotivespark-ignition engine fuels using gas chromatography andvacuum ultraviolet detection(GC-VUV).1.1.1 The concentration ranges for which precision has beendetermined are as follows:PropertyUnitsApplicable RangeParaffins%Volume3.572 to 23.105Isoparaffins%Volume22.697 to 71.993Olefins%Volume0.011 to 44.002Olefins%Mass0.027 to 41.954Naphthenes%Volume0.606 to 18.416Aromatics%Volume14.743 to 58.124Methanol%Volume0.063 to 3.426Ethanol%Mass0.042 to 15.991Benzene%Volume0.09 to 1.091Toluene%Volume0.698 to 31.377Ethylbenzene%Volume0.5 to 3.175Xylenes%Volume3.037 to 18.955Naphthalene%Volume0.019 to 0.779Methylnaphthalenes%Volume0.21 to 1.4841.1.2 This test method may be applicable to other concen-tration ranges,to other properties,or to other hydrocarbonstreams,however precision has not been determined.1.2 Individual hydrocarbon components are typically notbaseline-separated by the procedure described in this testmethod,that is,some components will coelute.The coelutionsare resolved at the detector using VUV absorbance spectra anddeconvolution algorithms.1.3 While this test method reports percent mass and percentvolume for several specific components that may be present inautomotive spark-ignition engine fuel,it does not attempt tospeciate all possible components that may occur in automotivespark-ignition engine fuel.In particular,this test method is notintended as a type of detailed hydrocarbon analysis(DHA).1.4 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.5 This standard does not purport to address all of thesafety concerns,if any,associated with its use.It is theresponsibility of the user of this standard to establish appro-priate safety,health,and environmental practices and deter-mine the applicability of regulatory limitations prior to use.See specific hazard statements in subsection 8.4 and Section 9.1.6 This international standard was developed in accor-dance with internationally recognized principles on standard-ization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recom-mendations issued by the World Trade Organization TechnicalBarriers to Trade(TBT)Committee.2.Referenced Documents2.1 ASTM Standards:2D1319 Test Method for Hydrocarbon Types in Liquid Petro-leum Products by Fluorescent Indicator AdsorptionD3606 Test Method for Determination of Benzene andToluene in Spark Ignition Fuels by Gas ChromatographyD4057 Practice for Manual Sampling of Petroleum andPetroleum ProductsD4307 Practice for Preparation of Liquid Blends for Use asAnalytical StandardsD5599 Test Method for Determination of Oxygenates inGasoline by Gas Chromatography and Oxygen SelectiveFlame Ionization Detection1This test method is under the jurisdiction of ASTM Committee D02 onPetroleum Products,Liquid Fuels,and Lubricants and is the direct responsibility ofSubcommittee D02.04.0L on Gas Chromatography Methods.Current edition approved July 1,2021.Published August 2021.Originallyapproved in 2017.Last previous edition approved in 2020 as D8071 20.DOI:10.1520/D8071-21.2For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.*A Summary of Changes section appears at the end of this standardCopyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United StatesThis international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for theDevelopment of International Standards,Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade(TBT)Committee.1D5769 Test Method for Determination of Benzene,Toluene,and Total Aromatics in Finished Gasolines by GasChromatography/Mass SpectrometryD5842 Practice for Sampling and Handling of Fuels forVolatility MeasurementD6300 Practice for Determination of Precision and BiasData